Some miscellaneous issues that have all started to crop up around the same time as I had a BSOD that make me think something may be "up" with my PC:

- Seems to have forgotten my default programs for opening certain file types, and won't let me change it back
- Keeps on forgetting what I have set as my default web browser
- Won't remember any changes I make to how folders are laid out (large/small icons etc) in my Videos folder and such
- MSE sometimes says it can't complete updates because of a "network connection problem" even though there's nothing obviously wrong with my network connection